From bd0f3345a938b35ce6a12f6150373b0955b8dd12 Mon Sep 17 00:00:00 2001
From: Timothy Pearson <kb9vqf@pearsoncomputing.net>
Date: Sun, 10 Jul 2011 15:24:15 -0500
Subject: Add Qt3 development HEAD version

---
 tutorial/t9/cannon.cpp | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 tutorial/t9/cannon.cpp

(limited to 'tutorial/t9/cannon.cpp')

diff --git a/tutorial/t9/cannon.cpp b/tutorial/t9/cannon.cpp
new file mode 100644
index 0000000..2badb39
--- /dev/null
+++ b/tutorial/t9/cannon.cpp
@@ -0,0 +1,50 @@
+/****************************************************************
+**
+** Implementation CannonField class, Qt tutorial 9
+**
+****************************************************************/
+
+#include "cannon.h"
+#include <qpainter.h>
+
+
+CannonField::CannonField( QWidget *parent, const char *name )
+        : QWidget( parent, name )
+{
+    ang = 45;
+    setPalette( QPalette( QColor( 250, 250, 200) ) );
+}
+
+
+void CannonField::setAngle( int degrees )
+{
+    if ( degrees < 5 )
+	degrees = 5;
+    if ( degrees > 70 )
+	degrees = 70;
+    if ( ang == degrees )
+	return;
+    ang = degrees;
+    repaint();
+    emit angleChanged( ang );
+}
+
+
+void CannonField::paintEvent( QPaintEvent * )
+{
+    QPainter p( this );
+
+    p.setBrush( blue );
+    p.setPen( NoPen );
+
+    p.translate( 0, rect().bottom() );
+    p.drawPie( QRect(-35, -35, 70, 70), 0, 90*16 );
+    p.rotate( -ang );
+    p.drawRect( QRect(33, -4, 15, 8) );
+}
+
+
+QSizePolicy CannonField::sizePolicy() const
+{
+    return QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Expanding );
+}
-- 
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